345447 has 12 divisors (see below), whose sum is σ = 504504. Its totient is φ = 227760.

The previous prime is 345431. The next prime is 345451. The reversal of 345447 is 744543.

345447 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 345447 - 2⁴ = 345431 is a prime.

It is a super-3 number, since 3×345447³ = 123670333249888869, which contains 333 as substring.

It is a d-powerful number, because it can be written as 3² + 4⁵ + 4⁶ + 5⁷ + 4⁹ + 7² .

It is a self number, because there is not a number n which added to its sum of digits gives 345447.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 345447.

It is not an unprimeable number, because it can be changed into a prime (345487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1033 + ... + 1325.

It is an arithmetic number, because the mean of its divisors is an integer number (42042).

2³⁴⁵⁴⁴⁷ is an apocalyptic number.

345447 is a deficient number, since it is larger than the sum of its proper divisors (159057).

345447 is a wasteful number, since it uses less digits than its factorization.

345447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 427 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 345447 is about 587.7473947199. The cubic root of 345447 is about 70.1660682924.

The spelling of 345447 in words is "three hundred forty-five thousand, four hundred forty-seven".